San Antonio Weather Forecast

    • 21
    • 54

    Mostly Sunny

    • 28
    • 64

    Mostly Sunny

    • 31
    • 67

    Partly Sunny

    • 36
    • 70

    Mostly Sunny

    • 31
    • 67

    Breezy

    • 27
    • 61

    Partly Sunny

Today 18 Apr Southern San Luis Valley

Sunny. Highs 49 to 56. North Winds up to 10 Mph.

Tonight 18 Apr Southern San Luis Valley

Clear. Lows in the teens. Northwest Winds up to 10 Mph.

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San Antonio Temperature Statistics

April Temperature

San Luis Valley Regional Airport (29.8 miles)

  • Lowest 5 April, 2026

    15.7 °F

  • Average April

    45.2 °F

  • Highest 9 April, 2026

    70 °F

Climate (2021–Present)

San Luis Valley Regional Airport (29.8 miles)

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  • Average Low 2021–2026

    26.8 °F

  • Average 2021–2026

    45.1 °F

  • Average High 2021–2026

    63.2 °F
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